You need to make sure the cooler base has even pressure on the GPU die and is making good contact. Also make sure the TIM is evenly spread over the die. The MEMIO is normally the hottest of the 3 core temps. It should be 5-15C hotter then the other two.

I agree with alex and Fr@nk. You need to re-seat/re-install your S1. The temperature variation between the three on-core GPU temps is much too great, signifying poor contact between the S1 base and the GPU core...

yep the problem is that your cooler is making uneven contact with the die. since the memio sensor is not located in the middle of the die it wont get cooled as well if the baseplate isnt sitting right on the core

Well, my guess/logic is:
GPU DISPIO - GPU (meaning GPU chip itself) DISPlay Input/Output; this would be part of GPU core that is responsible for communication with components that lead to your monitor (display)
GPU MEMIO - GPU MEMory Input/Output; meaning this is the temperature of the memory controler that is a part of GPU chip
GPU SHADERCORE - well, not much to explain. Shader core is part of GPU chip (core) that contains shader processing units, so this is the temperature of processors of your graphics card

VDCC Slave 1/2/3 - I have no exact idea, these are obviously VRM regulation temperatures, just not sure what slave 1/2/3 means. Are these temperatures for three chips consisting voltage regulation of the card?

Now what I'd really like is a scheme of GPU and VRM, showing which area sensors are placed in. Wizz, you seem to have that info It would help a lot in situations like darkfrank has, where only one temperature reading is "off scale" Thanks

@Chaos - seems fine to me..a bit weird that shadercore is 5C higher (usually first and third reading were always pretty much the same, only second being a bit higher, at least on 4870's if I remmember right). But since it's pretty cool 45-50C on all three in idle, I'd say it's all fine.

the vddc slave temps are the temperatures of the 3 pwm phase controllers on the card. marked on the picture below, hard to see. to the right of the big voltage controller ic
(img cut out)

Click to expand...

Ummm..marked on the picture, and hard to see? I can't see sh**
Oh, right, I saw it now when I've saved it and opened in paint with 2x zoom You should have done it in green, or any other non-PCB-red color But thanks for confirming

Btw, do you know anything about which is slave 1 and which is slave 3? I guess slave2 should be in the middle..
And I wonder.. will this card show 4 such temperatures, as small (but noticable) differences seen in last picture confirm it has a bit longer VITEC voltage controller chip (populates that empty space with free connections on PCB), and additional components where 4th "vddc slave" chip is missing on reference cards

And I wonder.. will this card show 4 such temperatures, as small (but noticable) differences seen in last picture confirm it has a bit longer VITEC voltage controller chip (populates that empty space with free connections on PCB), and additional components where 4th "vddc slave" chip is missing on reference cards

The large Vitec chip and the two smaller Pulse chips are effectively cooled without heatsinks, with just some low/moderate airflow from the VGA cooler fan or a nearby case fan. You shouldn't have to worry about them too much...

And I have one more:
- give us the option to resize GPU-Z window ourselves.. I want to see all sensors at once, without scroll.. Especialy since I can see 13 out of 14 anyway, so I have to scroll just for that one last sensor

@nafets - thanks for the markings of 1/2/3, and just to make it complete.. Is this what you ment about heating?